Conveyors
AssigneePitcraft Summit Limited
InventorGerald R. O. Pentith
Life of this patent
Estimating the term…
Abstract
A scraper chain conveyor with conveyor pans defining a bend round which flight bars are guided in the general plane of the conveyor is provided at the outside of the bend with an auxiliary conveying unit comprising two spaced apart sprockets rotatable about upstanding axes, a line joining the axes being parallel to a tangent to the bend at least when the auxiliary conveying unit is in use, at least one endless auxiliary chain trained round the sprockets, and means for driving the auxiliary chain in a direction such that its chain run adjacent the scraper chain conveyor moves in the direction of feed of the scraper chain conveyor.
Claims13
A scraper chain conveyor comprising conveyor pans defining a bend round which flight bars attached to at least one chain of said conveyor are guided in the general plane of said conveyor, an auxiliary conveying unit provided at the outside of said bend, said auxiliary conveying unit comprising two spaced apart sprockets rotatable about upstanding axes, a line joining said axes being parallel to a tangent to said bend at least when said auxiliary conveying unit is in use, at least one endless auxiliary chain trained round said sprockets, and means for driving said auxiliary chain in a direction such that its chain run adjacent said scraper chain conveyor moves in the direction of feed of said scraper chain conveyor.
A conveyor as claimed in claim 8, wherein said drive chain is threaded through a tensioning device incorporating one or more sprockets, one of which is urged in a tensioning direction by tensioning means.
A conveyor as claimed in claim 9, wherein said tensioning means is a hydraulic ram.
A conveyor as claimed in claim 13, wherein said auxiliary conveying unit is provided with a downwardly directed support shoe slidably engaging an arcuate guide track of said scraper chain conveyor.
Dependencies are inferred from the claim text.